The cause of the fire remains under investigation. Investigators continue to work with police, State Fire Marshal's Office investigators and the Bureau of Alcohol, Tobacco, Firearms and Explosives, which is a common practice at a large fire scene. Damages have not yet been determined.More >>

The cause of the fire remains under investigation. Investigators continue to work with police, State Fire Marshal’s Office investigators and the Bureau of Alcohol, Tobacco, Firearms and Explosives, which is a common practice at a large fire scene. Damages have not yet been determined.More >>

The Madison Fire Department continues to monitor the scene of a fire at a 105-unit apartment building under construction on the east side that happened Friday night.More >>

The Madison Fire Department continues to monitor the scene of a fire at a 105-unit apartment building under construction on the east side that happened Friday night.More >>

MADISON (WKOW) -- The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) National Response Team (NRT) arrived Sunday to help investigate the fire at Grandview Commons apartment complex on Apollo Way in Madison.

Two dozen special agents and specialists with the NRT and agents from the St. Paul Field Division were activated by request of the Madison Fire and Police Departments, as well as the State of Wisconsin-Department of Justice-Division of Criminal Investigation-State Fire Marshal's Office. Friday evening, at approximately 7:30, fire was reported at the 105-unit complex, which was under construction. When crews arrived on scene, the building was heavily involved in flames.

ATF Acting Special Agent in Charge, Jeffrey Magee, of the St. Paul Field Division, stated: “ATF is investigating this fire with our state and local partners and will work together as one unit to determine the origin and cause of this fire.”

The total loss of Grandview Commons is estimated at $3.5 to 5 million. This is the 10th activation of the NRT in fiscal year 2014, and the 757th activation since the inception of the team in 1978.

Madison Fire and Police Joint Task Force is also assisting in the investigation.